print("hello,world")
a, b = 10,20
print(a)
print(b)

username = input("请输入用户名：")
print(username)

data_01 = input("数据：")
print(data_01)
print(type(data_01))

num_01 = int(input("数字1："))
num_02 = int(input("数字2："))
print(num_01 + num_02)